Combination-gage.



No. 826,811. 1 PATENTED JULY 17, 1906. J. D. GAN'N.

COMBINATION GAG-B.

APPLICATION FILED DBO. 14. 1905.

magnum-rig.E mu Z9 11111111111111 11121115 20 1 I 31$ Mimi; 6/ I. f L n u 7:1 I 5 1 W1 bun 20 z I 7' 4 J6 WITNESSES" 3" 1 INVENTOH (Jam e62. Cazzn UNITED STATES PATENT OFFICE. JAMES DANIEL (JANN, OF NEW CASTLE, PENNSYLVANIA. COMiBlNATION-GAGE.

To all whom it may concern:

of New Castle, in the county of Lawrence and State of Pennsylvania, have invented a new and Improved Combination-Gage, of which the following is a full, clear, and exact description.

The purpose of the invention is to provide a combination-tool or universal machinists tool whereby the gage, bevel, or angle of any piece of work may be quickly and accurately determined; and the purpose of the invention is to construct such a tool of three main elements capable of use independently or in combination.

he invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

eference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is 'a plan view of the improved tool complete. Fig. 2 is also a plan view of the tool and illustrates the association of the protractor-plate and the gage star-wheel only. Fig. 3 is a view similar to that shown m Fig. 2, but illustrates the association of the protractor-plate and the gage-arm; and Fig. 4 is an enlarged transverse section taken practically on the line 4 4 of Fig. 1.

A represents the body-plate of the tool, the said body-plate being L-shaped in eneral contour, embracing two limbs a and a. In the end of one of the said limbs-the limb a, for eXamplea V-slot is made, adapted as a. gage for setting thread-tools for chasing threads, and the corners 11 of the said bodyplate A are rounded off, giving five different fillets.

A protractor-scale 12 is produced on the limb a of the said body-plate, extending longitudinally of the said limb, the straight edge of the scale facing the opposing limb a, and at t e point from which the arc of the scale 12 is struck an opening 13 is made in the said body-plate to tightly receive a bolt 14, over the threaded portion of which bolt a washer 15 is placed, and the threaded end of the bolt is capped by a milled nut 16, as is best shown in Fig. 4.

A gage-wheel B is mounted to turn loosely on the said bolt 14, and said wheel is a star- Specification of Letters Patent. Application filed December 14,

Patented July 1 7, l 906. 1905. Serial No. 291,672.

wheel, being usually provided with siX points 17. The edge of the wheel between the said points is concaved, as is shown at 18 in the drawings. When the gage-wheel B is properly mounted on the bolt 14, it can be readily turned of the body-plate where the limbs The points on the wheel of the body-plate.

The third piece in the make-up of the tool consists of a gage-arm C, and it maybe here remarked that the three parts A, B, and C are made from thin metal, preferably steel, and are flat on both faces. The gage-arm C has one end offset from the other, producing thereby two limbs c and c, the limb a being longer than the limb c, and a longitudinal slot 19 is made in the said gage-arm, extending from the bridge or intermediate section 0 connecting the two limbs c and 0 into the longer limb c for a predetermined distance.

When the gage-arm is in position, the threaded stud or bolt passes through rendering the arm adjustable on the body- The star-wheel can be used alone as a female radius-gage for obtaining fillets in any bored hole or for analogous purposes, and the said gage or star-wheel B is many times used, as shown in Fig. 2, in connection with the protractor-plate A, as a radius or fillet gage for obtaining fillets in any turned k, for instance.

The complete gage, as shown in Fig. 1, is likewise used for many purposes-as, for example, the gage-arm C, in connection with the rest of the parts, may be employed for finding the center of any round or square and will also show a special Again, the gage-arm O the said slot,

tor, giving slight angles which cannot be given with the protractor alone.

It will be understood that the protractor may be provided with special marks, desig- ICO IIO

' body-plate nating, for example, square, hexagon gage, &c., and that scales or lines for such gages may be produced both upon the body and upon the gage-wheel wherever found necessary.

The gage-arm C may be used as a bevel for shaping or planing hexagon nuts, &c., or as a center gage or a bevel or depth gage, and the body or protractor plate may be used alone in like manner as a T-square.

This tool is capable of many arrangements for different work and, in fact, will answer as a machinists gage wherever such gage is needed.

The limbs c and c of the gage-arm C are offset, as shown, so as to bring the threaded stud or bolt 14 centrally, making the center square and protractor perfect. The gagearm 0 has one pointed end 20 to be used in dovetailing and for cutting bastard-threads or for cutting into sharp corners.

The gage-arm C is provided with a scale 21 in inches and fractions of inches, which scale is read at the outer longitudinal edge of the longer limb c of said arm.

With reference to Figs. 1 and 2 it will be observed that the spaces between the points 17 of the gage star-wheel B are the same and that the distance between opposing points is such that when one of the said points is at the inner longitudinal edge of the limb a of the body-plate A the opposing edge of the opposing point will be at the inner longitudinal edge of the limb a of the said body or protractor plate.

Having hus described my invention, I claim as new and desire to secure by Letters Patent- 1. A machinists tool, consisting of an angular body-plate comprising two limbs at angles to each other having a protractor upon one of its limbs, and a gage-wheel in the form of a star mounted to revolve on the said at a point from which the arc of the protractor is struck, said gage-wheel being also mounted so that in its revolution while sundry of its points pass over the protractor other of its points pass over the inner edge of the said body-plate, or the edge where its limbs meet:

2. A machinists tool, consisting of an L- shaped plate having rounded corners and a protractor thereon, a gage-wheel in the form of a star, which gage-wheel is mounted to revolve on the said body-plate, the edge of the said wheel between the points being concaved and the width of the spaces between the points being the same.

center gage, center 8. A machinist s tool, consisting of an an gular body having a protractor thereon, and a gage-arm having one end offset from the other, a longitudinal slot extending in one of the said endportions and into the connecting-section of the two end portions, and a bolt fitted tight to the body and passed loosely through the said slot at a point from which the arc of the protractor is struck.

4. A machinists tool consisting of an angular body-plate having a protractor thereon, a star-wheel mounted to revolve on the said body-plate, the points whereof extend over the protractor, and a gage-arm adjustable upon the said body-plate, acting in conjunction with the said star-wheel.

5. A machinists tool, comprising an angular body-plate having rounded corners and a protractor thereon, the said body-plate having a recess in one of its ends, a pivot-pin passed through the said body-plate at the point where the arc of the said protractor is struck, a gage-wheel in the form of a star, mounted to revolve upon the said pivot-pin, the points of the gage-wheel extending across the protractor, and a gage-arm having one end offset from the other, providing a long and a short limb, the short limb being pointed and the long limb provided with a scale, said gage-arm being likewise provided with a slot produced in the longer limb of the arm and extending into the section connecting the two limbs, and a locking device for the gage-wheel and for the gage-arm, for the purpose described. I

6. A machinists tool consisting of a substantially L-shaped plate having a protractor thereon, and a star gage-wheel mounted to revolve on the said plate, the points of the wheel traveling over the protractor and moving relatively to the point of juncture of the limbs of the plate.

7. A machinists tool, consisting of a substantially L-shaped plate having a protractor thereon, and a star-shaped gage-wheel mounted to revolve upon the plate, having curved surfaces between its points, the points traveling over the protractor, and the curved surfaces between the points bridging, in the revolution of the wheel, the point of juncture between the limbs of the plate.

In testimony whereof I name to this specification in the presence of two subscribing witnesses.

JAMES DANIEL CANN.

Witnesses:

FRANCIS P. DUFFORD, 'FRED. I-I. ROSSITER.

have signed my 

